#1572 Improve authoring structure documentation Pull request opened by samhita-alla TL;DR This PR improves the authoring structure documentation. • Added graphviz package to render visualizations • Edited content for clarity Type ☐ Bug Fix ☐ Feature ☐ Plugin Are all requirements met? ☐ Code completed ☐ Smoke tested ☐ Unit tests added ☐ Code documentation added ☐ Any pending items have an associated Issue Complete description How did you fix the bug, make the feature etc. Link to any design docs etc Tracking Issue https://github.com/flyteorg/flyte/issues/ Follow-up issue NA OR https://github.com/flyteorg/flyte/issues/ flyteorg/flytekit ✅ All checks have passed 30/30 successful checks